diff -r 000000000000 -r d970ebf37754 wp/wp-includes/SimplePie/Category.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/SimplePie/Category.php	Wed Nov 06 03:21:17 2013 +0000
@@ -0,0 +1,157 @@
+<?php
+/**
+ * SimplePie
+ *
+ * A PHP-Based RSS and Atom Feed Framework.
+ * Takes the hard work out of managing a complete RSS/Atom solution.
+ *
+ * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * 	* Redistributions of source code must retain the above copyright notice, this list of
+ * 	  conditions and the following disclaimer.
+ *
+ * 	* Redistributions in binary form must reproduce the above copyright notice, this list
+ * 	  of conditions and the following disclaimer in the documentation and/or other materials
+ * 	  provided with the distribution.
+ *
+ * 	* Neither the name of the SimplePie Team nor the names of its contributors may be used
+ * 	  to endorse or promote products derived from this software without specific prior
+ * 	  written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
+ * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @package SimplePie
+ * @version 1.3.1
+ * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
+ * @author Ryan Parman
+ * @author Geoffrey Sneddon
+ * @author Ryan McCue
+ * @link http://simplepie.org/ SimplePie
+ * @license http://www.opensource.org/licenses/bsd-license.php BSD License
+ */
+
+/**
+ * Manages all category-related data
+ *
+ * Used by {@see SimplePie_Item::get_category()} and {@see SimplePie_Item::get_categories()}
+ *
+ * This class can be overloaded with {@see SimplePie::set_category_class()}
+ *
+ * @package SimplePie
+ * @subpackage API
+ */
+class SimplePie_Category
+{
+	/**
+	 * Category identifier
+	 *
+	 * @var string
+	 * @see get_term
+	 */
+	var $term;
+
+	/**
+	 * Categorization scheme identifier
+	 *
+	 * @var string
+	 * @see get_scheme()
+	 */
+	var $scheme;
+
+	/**
+	 * Human readable label
+	 *
+	 * @var string
+	 * @see get_label()
+	 */
+	var $label;
+
+	/**
+	 * Constructor, used to input the data
+	 *
+	 * @param string $term
+	 * @param string $scheme
+	 * @param string $label
+	 */
+	public function __construct($term = null, $scheme = null, $label = null)
+	{
+		$this->term = $term;
+		$this->scheme = $scheme;
+		$this->label = $label;
+	}
+
+	/**
+	 * String-ified version
+	 *
+	 * @return string
+	 */
+	public function __toString()
+	{
+		// There is no $this->data here
+		return md5(serialize($this));
+	}
+
+	/**
+	 * Get the category identifier
+	 *
+	 * @return string|null
+	 */
+	public function get_term()
+	{
+		if ($this->term !== null)
+		{
+			return $this->term;
+		}
+		else
+		{
+			return null;
+		}
+	}
+
+	/**
+	 * Get the categorization scheme identifier
+	 *
+	 * @return string|null
+	 */
+	public function get_scheme()
+	{
+		if ($this->scheme !== null)
+		{
+			return $this->scheme;
+		}
+		else
+		{
+			return null;
+		}
+	}
+
+	/**
+	 * Get the human readable label
+	 *
+	 * @return string|null
+	 */
+	public function get_label()
+	{
+		if ($this->label !== null)
+		{
+			return $this->label;
+		}
+		else
+		{
+			return $this->get_term();
+		}
+	}
+}
+